Limit order discovery and Open Food Facts searches

tests/test_history.py

@@ -5,7 +5,8 @@ from pathlib import Path
 
 import pytest
 
-from ocado_grocy.history import order_links,private_json,cached_orders,select_orders,OrderLink
+from ocado_grocy.history import (order_links,private_json,cached_orders,select_orders,OrderLink,
+                                 discover_orders,save_order_manifest)
 from ocado_grocy.pantry import classify
 from ocado_grocy.receipt import ImportError,Item,parse_ocado_order
 from ocado_grocy.grocy import (Journal,import_receipt,description,refresh_imported_products,
@@ -15,6 +16,76 @@ from test_grocy import FakeGrocy,receipt
 FIXTURE=Path(__file__).parent/'fixtures'/'history_receipt.json'
 
 
+class HistoryPage:
+    def __init__(self, batches, end_marker=True):
+        self.batches = batches
+        self.index = 0
+        self.end_marker = end_marker
+        self.mouse = self
+
+    def locator(self, selector):
+        page = self
+        class Locator:
+            def count(self):
+                if selector == 'a[href*="/orders/"]':
+                    return len(page.batches[page.index])
+                return int(page.end_marker and page.index == len(page.batches) - 1)
+            @property
+            def last(self):
+                return self
+            def scroll_into_view_if_needed(self):
+                pass
+        return Locator()
+
+    def get_by_role(self, *args, **kwargs):
+        return self.locator('button')
+
+    def content(self):
+        return '<html>' + ''.join(
+            f'<a href="/orders/{order}/details">Sep 8, 2026 Delivered</a>'
+            for order in self.batches[self.index]) + '</html>'
+
+    def wheel(self, *args):
+        self.index = min(self.index + 1, len(self.batches) - 1)
+
+    def wait_for_timeout(self, milliseconds):
+        pass
+
+
+@pytest.mark.parametrize('batches,completed,expected_index', [
+    ([['3', '2'], ['3', '2', '1']], {'2', '1'}, 0),
+    ([['3'], ['3', '2'], ['3', '2', '1']], {'2', '1'}, 1),
+    ([['3'], ['3', '2'], ['3', '2', '1']], set(), 2),
+])
+def test_discovery_stops_at_completed_batch_or_end(batches, completed, expected_index):
+    page = HistoryPage(batches)
+    links = discover_orders(page, lambda message: None, completed=completed)
+    assert page.index == expected_index
+    assert [link.order_id for link in links] == batches[expected_index]
+
+
+def test_explicit_discovery_searches_past_completed_orders():
+    page = HistoryPage([['3'], ['3', '2'], ['3', '2', '1']], end_marker=False)
+    links = discover_orders(page, lambda message: None, completed={'3'}, order_ids=('2',))
+    assert page.index == 1
+    assert [link.order_id for link in links] == ['3', '2']
+
+
+def test_discovery_still_rejects_stalled_history():
+    with pytest.raises(ImportError, match='stopped loading'):
+        discover_orders(HistoryPage([['3']], end_marker=False), lambda message: None)
+
+
+def test_incremental_manifest_preserves_older_pending_orders(tmp_path):
+    old = [OrderLink('2', '2026-09-07', 'old-url'), OrderLink('1', '2026-09-06', 'url')]
+    save_order_manifest(tmp_path, old)
+    new = [OrderLink('3', '2026-09-08', 'url'), replace(old[0], url='updated-url')]
+    merged = save_order_manifest(tmp_path, new)
+    assert merged == new + old[1:]
+    assert [link.order_id for link in select_orders(merged, completed={'2'})] == ['3', '1']
+    assert len(json.loads((tmp_path/'orders.json').read_text())) == 3
+
+
 def test_storage_and_categories_select_without_a_product_list():
     order=parse_ocado_order(json.loads(FIXTURE.read_text()))
     assert sum(classify(i).include for i in order.items)==9